期刊
FEBS LETTERS
卷 588, 期 24, 页码 4784-4790出版社
WILEY
DOI: 10.1016/j.febslet.2014.11.011
关键词
Alternative splicing; Hypoxia; MYC associated factor X; MYC; Nonsense-mediated decay; Protein stability
资金
- Else Kroner-Fresenius-Stiftung [2012_A297]
The MYC-MAX-MXD network is involved in the regulation of cell differentiation and proliferation. Hypoxia affects the expression levels of several members of this network, but changes specific to MAX expression have so far not been shown. We found that in endothelial cells, hypoxia induces alternative splicing of MAX, thereby increasing the expression of two MAX isoforms that differ from the wild type in their 30 end. Isoform C is degraded by nonsense-mediated decay and isoform E encodes a highly unstable protein. The instability of isoform E is conferred by 36 isoform-specific amino acids, which have the capacity to destabilize heterologous proteins. Both splicing events are therefore unproductive and serve the purpose to downregulate the wild type protein. (C) 2014 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
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